Decide which language you want to learn. If your foreign language pursuits are simply for fun or self-improvement, you can choose any language you like. If you are looking to make a career jump based on mastering a new language, you should choose a language that would enhance your skills in your field.
Use Internet sites to learn the basics of your foreign language of choice; aspects such as alphabet, basic vocabulary and pronunciation. If your chosen language is Korean, for example, you might use Keith Enevoldsen's Think Zone Korean alphabet site to learn the Korean consonants and vowels, and the University of Indiana's Hangul Korean sounds site to listen to pronunciation and to pick up some simple vocabulary.
Use online language tutors for personal help. If you are learning Hebrew, for example, sites such as Janglo will often list tutors who work online.
Try free online foreign language lessons from services such as E-Language School and Word2Word; these sites offer free lessons in dozens of languages. These sites will often offer lessons by topic so that you can start with the basic alphabet and vocabulary and then move on to more advanced vocabulary and grammar.
Use language-learning software to augment your skills. These usually consist of lessons on CD or DVD and can be bought at bookstores or online; they can also be bought at kiosks in shopping malls.
Use YouTube to listen to videos in the target language to improve your skills and your pronunciation. If possible, find videos that have subtitles in English. If you have the resources, you can also purchase or rent movies in your target language.